Frank, the plumber, has 6 3/4 ft of pipe. he needs to divide it into pieces that are 1/4 ft long. how many 1/4-pieces of the pipe can frank make?

Letter b hope it

Hello! i hope this
since the cosine is the ratio of the adjacent side to the hypotenuse, you can see that cos 60° = ½. answer. according to the property of cofunctions (topic 3), sin 30° is equal to cos 60°. sin 30° = ½.